DS92LX1621: Question about run-length limitation

Takehiro Sato

Intellectual 2875 points

Part Number: DS92LX1621

Hello Team,

I have question about run-length for channel link III serdes devices.

What is limitation about run-length for DS92LM1621/22?

Best regards,

Sato

over 5 years ago

0 Charley Cai over 5 years ago

TI__Genius 12866 points

Hi Sato,

Are you referring to DS92LX1621/22?

Best Regards,

Charley Cai

0 Takehiro Sato over 5 years ago in reply to Charley Cai

TI__Intellectual 2875 points

Hi Charley,

Yes, The DS92LX1621/22 is correct.

Best regards,

Sato

0 Charley Cai over 5 years ago in reply to Takehiro Sato

TI__Genius 12866 points

Hi Sato,

They can typically support 10m of cable depending on cable media and clock frequency.

Please see TRANSMISSION MEDIA section in the device datasheet and this app note https://www.ti.com/lit/an/snla213/snla213.pdf?ts=1591891175578&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FDS92LX1621%253Fqgpn%253Dds92lx1621 for more information.

Best Regards,

Charley Cai

0 Takehiro Sato over 5 years ago in reply to Charley Cai

TI__Intellectual 2875 points

Hi Charley,

Sorry, I'm talking about ' Run-length', not cable length or distance of data lane. The Serdes run length is 5bit on 8b/10b encoding typically, Is it same value at channel link iii?

Best regards,

Sato

0 Charley Cai over 5 years ago in reply to Takehiro Sato

TI__Genius 12866 points

Hi Sato,

Channel link iii has a 28 bit frame and 16 bit of them are image data.

Best Regards,

Charley Cai

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DS92LX1621: Question about run-length limitation